1268563 has 2 divisors, whose sum is σ = 1268564. Its totient is φ = 1268562.

The previous prime is 1268549. The next prime is 1268567. The reversal of 1268563 is 3658621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1268563 - 2⁹ = 1268051 is a prime.

It is not a weakly prime, because it can be changed into another prime (1268567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 634281 + 634282.

It is an arithmetic number, because the mean of its divisors is an integer number (634282).

2^1268563 is an apocalyptic number.

1268563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1268563 is an equidigital number, since it uses as much as digits as its factorization.

1268563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 31.

The square root of 1268563 is about 1126.3050208536. The cubic root of 1268563 is about 108.2523534202.

The spelling of 1268563 in words is "one million, two hundred sixty-eight thousand, five hundred sixty-three".